Method of implementing location, method of broadcasting position information of neighbor base station and method of negotiating location capability

Abstract

A method of implementing the location includes determining the base stations participating in the location and parameters required in the location via the signaling interaction between a mobile station and a serving base station. Afterwards, the mobile station and the base stations participating in the location perform the location measuring according to the determined parameters required in the location; at last, performing the location calculation according to the measuring result of location measuring.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) AND CLAIM OF PRIORITY[0001]The present application claims the benefit under 35 U.S.C. §119(a) to a Chinese patent application filed in the Chinese Intellectual Property Office on Aug. 28, 2009 and assigned Serial No. 200910171538.8, the entire disclosure of which is hereby incorporated by reference.TECHNICAL FIELD OF THE INVENTION[0002]The present invention relates to wireless location technology, and more particularly, to a method of implementing the location, a method of broadcasting the position information of neighbor base stations and a method of negotiating the location capability.BACKGROUND OF THE INVENTION[0003]The study for wireless location technology began with the automatic vehicle location system of 1960s; afterwards, the technology has been widely used in public traffic, taxi dispatching and public security tracing. Thereafter, along with the rising position based information service demand required by the folks, the wireless l...

AI Technical Summary

Benefits of technology

[0018]To address the above-discussed deficiencies of the prior art, it is a primary object to provide a method of implementing the location measurement to reduce the signaling redundancy and the system overhead for use in the location measurement.

[0042]On the basis of the above technical solution, the mobile station and the serving base station provided by the present invention may further determine the location method via the signaling interaction; besides, the mobile station and the base stations participating in the location perform the location measuring according to the determined location method and the parameters required in the location. Since it may be determined to adopt any one or multiple existing location method in the prior art when the mobile station and the serving base station determine the location method, such as the mixed location method, it is needless to perform the location based on the mixed location method supported by several sets of signaling in the prior art, it is possible to save the signaling overhead and reduce the delay, thereby improving the system efficiency and the throughput of the system available information.

[0043]In addition, in accordance with the present invention, by providing a set of signaling for use in performing the location, it is possible to solve the problem that the redundancy of existing signaling and the system overhead are large, so as to improve the throughput of the system available information. Besides, in accordance with the signaling and method provided by the present invention, it is possible to support the uplink and downlink location at the same time; each location method supports the mobile station triggering and the network triggering, which improves the flexibility of location triggering.

Problems solved by technology

Therefore, GPS may not be convenient for most users.

The monitoring device measures signal parameters sent by the mobile station, and estimates the approximate position of mobile station by use a proper algorithm; however, the signal propagation is dependent upon the character of mobile communication channel to a great extent, which greatly affects the location precision.

The above redundant indication elements or parameters only refer to the switching and scanning procedure, which are not required in the location service; when the above signaling is used as location signaling, however, such indication elements or parameters are inevitably transmitted; as a result, it is possible to cause the signaling redundancy and increase the overhead of system.

in a similar way, there are also many redundancy indication elements which are not required by the location server in the above second set of uplink ranging signaling, which causes the signaling redundancy and very large overhead when the location is performed by use of the uplink ranging signaling.

Besides, the second set of signaling only supports the location triggered by the network, does not support the location triggered by a terminal.

Secondly, when the existing signaling is used in the location service, it is possible to cause that the feedback information of one side is impossible to reach the location requirement desired by the other side since the two sides of signaling is impossible to acquire the purpose of signaling completely.

At this time, it is possible to cause that the MS is impossible to complete the location measurement and calculation.

In addition, the above two sets of signaling only can support a single location method; if it is required to support the mixed location method, it is possible to get the support of several sets of signaling at the same time, which increases the extra overhead.

In this way, the system overhead can be very large; alternatively, the delay is relatively large when the two sets of signals are used.

If there is an error in the transmission of signals, it is required to use the retransmission mechanism; as a result, it is possible to greatly reduce the system efficiency and it is also possible to reduce the throughput of the available information of system.

Images